ok so i guess i am a little foggy from the summer break. can someoen help me with this question? if cos t = (4/5), then find cos (t + pi) I am totally lost, so please help me.
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Originally Posted by zooanimal98 ok so i guess i am a little foggy from the summer break. can someoen help me with this question? if cos t = (4/5), then find cos (t + pi) I am totally lost, so please help me. Let's try to see what simplifies to, in terms of sine and cosine... <-- Sum Identity Note that Thus, our expression simplifies to I'm sure you can take it from here... I hope this helps --Chris EDIT: JaneBennet beat me...
i guess i am a little on the slow side. does that mean the answer is -4/5? if not then well i guess i still need a better explantion Originally Posted by Chris L T521 Let's try to see what simplifies to, in terms of sine and cosine... <-- Sum Identity Note that Thus, our expression simplifies to I'm sure you can take it from here... I hope this helps --Chris EDIT: JaneBennet beat me...
Originally Posted by zooanimal98 i guess i am a little on the slow side. does that mean the answer is -4/5? if not then well i guess i still need a better explantion --Chris
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